Relationship Hashimoto s Disease or Hypothyroidism [diagnosis since 2009] to First Degree Heart Block [since 1959 at least, when diagnosed] and Heart Attack [see Susan Cheng, Framingham Study and @2011 British Study in is it EuroCardio? ~ if Heart Attack those with Block more prone to death]. Thank you! Douglass Adamsson, AB Yale, JD, EdD, MDiv Harv [ETS], Professor, Fine Art/ist